This was an economic plan devised by henry clay and john c. calhoun, stressing high tariffs- to support internal improvements- and a national bank- to promote private enterprise and create a national currency.

American System is an economic plan devised by Henry Clay and John C. Calhoun

rome's central location made it a center for trade through out the mediterain.

rome's lack of natural resouces encourgaged expansion and rome's geography priotected the city from invasion.